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    Network routing question

    IT Discussion
    fedora 30 network routing dns
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    • dafyreD
      dafyre @FATeknollogee
      last edited by

      @FATeknollogee said in Network routing question:

      @Dashrender said in Network routing question:

      I see these two IPv4 networks
      10.250.251.242/22 brd 10.250.251.255
      10.50.235.12/24 brd 10.50.235.255

      Assuming you want to reach 10.50.235.200 for DNS, do you have that address setup as a DNS server?

      Also, if you have multiple DNS server setup, it will use the first one until it fails, then it will failover to #2 in the list, etc. so you can't simply list multiple DNS server and expect them all to be used.

      Can you ping the IP of the client you want to connect to by IP?

      DNS server is at 10.50.235.235
      Yes, I can ping the DNS Server and the clients on the 10.50 network by IP address but not by name.
      If I disable the 10.250 network, then I can ping & reach the clients by name.

      What is your machine set to use for DNS server right now?

      FATeknollogeeF dafyreD 2 Replies Last reply Reply Quote 1
      • FATeknollogeeF
        FATeknollogee @dafyre
        last edited by

        @dafyre said in Network routing question:

        What is your machine set to use for DNS server right now?

        It gets it's DNS settings from the DHCP server.
        10.250.250.254
        10.50.235.235

        KellyK 1 Reply Last reply Reply Quote 0
        • KellyK
          Kelly @FATeknollogee
          last edited by

          @FATeknollogee said in Network routing question:

          @dafyre said in Network routing question:

          What is your machine set to use for DNS server right now?

          It gets it's DNS settings from the DHCP server.
          10.250.250.254
          10.50.235.235

          Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

          FATeknollogeeF 1 Reply Last reply Reply Quote 0
          • FATeknollogeeF
            FATeknollogee @Kelly
            last edited by

            @Kelly said in Network routing question:

            @FATeknollogee said in Network routing question:

            Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

            No, 250.254 doesn't have a DNS server, just services provided by the dhcp router.

            KellyK 1 Reply Last reply Reply Quote 0
            • KellyK
              Kelly @FATeknollogee
              last edited by

              @FATeknollogee said in Network routing question:

              @Kelly said in Network routing question:

              @FATeknollogee said in Network routing question:

              Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

              No, 250.254 doesn't have a DNS server, just services provided by the dhcp router.

              I am confused. Either way, does the DNS server in the subnet where your DNS service is working have the DNS server for the non functioning subnet in its upstream list or a secondary zone for that subnet?

              FATeknollogeeF 1 Reply Last reply Reply Quote 0
              • FATeknollogeeF
                FATeknollogee @Kelly
                last edited by

                @Kelly said in Network routing question:

                @FATeknollogee said in Network routing question:

                @Kelly said in Network routing question:

                @FATeknollogee said in Network routing question:

                Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

                No, 250.254 doesn't have a DNS server, just services provided by the dhcp router.

                I am confused. Either way, does the DNS server in the subnet where your DNS service is working have the DNS server for the non functioning subnet in its upstream list or a secondary zone for that subnet?

                250.254 is my Meraki router (so no "standalone" DNS server)
                Not sure if I can add a secondary zone

                KellyK 1 Reply Last reply Reply Quote 0
                • KellyK
                  Kelly @FATeknollogee
                  last edited by

                  @FATeknollogee said in Network routing question:

                  @Kelly said in Network routing question:

                  @FATeknollogee said in Network routing question:

                  @Kelly said in Network routing question:

                  @FATeknollogee said in Network routing question:

                  Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

                  No, 250.254 doesn't have a DNS server, just services provided by the dhcp router.

                  I am confused. Either way, does the DNS server in the subnet where your DNS service is working have the DNS server for the non functioning subnet in its upstream list or a secondary zone for that subnet?

                  250.254 is my Meraki router (so no "standalone" DNS server)
                  Not sure if I can add a secondary zone

                  You can use an IP helper for a Meraki: https://documentation.meraki.com/MX/DHCP/Configuring_DHCP_Relay.

                  FATeknollogeeF 1 Reply Last reply Reply Quote 0
                  • dafyreD
                    dafyre @dafyre
                    last edited by

                    @dafyre said in Network routing question:

                    DNS server is at 10.50.235.235

                    Configure your computer to look to 235.235 for DNS... and configure the DNS server at 235.235 to forward anything it doesn't recognize along to your Meraki?

                    FATeknollogeeF 1 Reply Last reply Reply Quote 0
                    • FATeknollogeeF
                      FATeknollogee @Kelly
                      last edited by

                      @Kelly said in Network routing question:

                      @FATeknollogee said in Network routing question:

                      @Kelly said in Network routing question:

                      @FATeknollogee said in Network routing question:

                      @Kelly said in Network routing question:

                      @FATeknollogee said in Network routing question:

                      Does 250.254 have 235.235 in its upstream list or have a secondary zone for 235.x?

                      No, 250.254 doesn't have a DNS server, just services provided by the dhcp router.

                      I am confused. Either way, does the DNS server in the subnet where your DNS service is working have the DNS server for the non functioning subnet in its upstream list or a secondary zone for that subnet?

                      250.254 is my Meraki router (so no "standalone" DNS server)
                      Not sure if I can add a secondary zone

                      You can use an IP helper for a Meraki: https://documentation.meraki.com/MX/DHCP/Configuring_DHCP_Relay.

                      Unfortunately, no MX, I got rid of my MX84.
                      DHCP is handled by Meraki MS320-24 Layer 3 switch

                      1 Reply Last reply Reply Quote 0
                      • 1
                        1337
                        last edited by

                        Why are you discussing DNS? Routing has nothing to do with DNS. DNS is for resolving names.

                        FATeknollogeeF 1 Reply Last reply Reply Quote 0
                        • FATeknollogeeF
                          FATeknollogee @1337
                          last edited by

                          @Pete-S said in Network routing question:

                          Why are you discussing DNS? Routing has nothing to do with DNS. DNS is for resolving names.

                          Because I want to access the resources via name resolution (you gotta read my OP)

                          1 Reply Last reply Reply Quote 0
                          • KellyK
                            Kelly
                            last edited by

                            Looks like the MS series supports the DHCP relay setting: https://community.meraki.com/t5/Switching/need-to-configure-DHCP-IP-helper-address-on-VLAN-in-MS-switch/td-p/22806.

                            FATeknollogeeF 1 Reply Last reply Reply Quote 0
                            • FATeknollogeeF
                              FATeknollogee @Kelly
                              last edited by

                              @Kelly said in Network routing question:

                              Looks like the MS series supports the DHCP relay setting: https://community.meraki.com/t5/Switching/need-to-configure-DHCP-IP-helper-address-on-VLAN-in-MS-switch/td-p/22806.

                              I can't use that relay setting since I still need dhcp on the 250.254 network

                              KellyK 1 Reply Last reply Reply Quote 0
                              • KellyK
                                Kelly @FATeknollogee
                                last edited by

                                @FATeknollogee said in Network routing question:

                                @Kelly said in Network routing question:

                                Looks like the MS series supports the DHCP relay setting: https://community.meraki.com/t5/Switching/need-to-configure-DHCP-IP-helper-address-on-VLAN-in-MS-switch/td-p/22806.

                                I can't use that relay setting since I still need dhcp on the 250.254 network

                                If you're using some automation you could push the resolution for specific targets to the hosts file on the end points.

                                1 Reply Last reply Reply Quote 1
                                • FATeknollogeeF
                                  FATeknollogee @dafyre
                                  last edited by

                                  @dafyre said in Network routing question:

                                  @dafyre said in Network routing question:

                                  DNS server is at 10.50.235.235

                                  Configure your computer to look to 235.235 for DNS... and configure the DNS server at 235.235 to forward anything it doesn't recognize along to your Meraki?

                                  I added 235.235 as an additional DNS in the 250.254 network.

                                  I tried this yesterday but silly me forgot to "refresh" the NIC so it could grab the new settings.

                                  All is good & working.

                                  1 Reply Last reply Reply Quote 1
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